PADL Software nss_ldap DNS查询应答拒绝服务攻击漏洞

漏洞信息详情

PADL Software nss_ldap DNS查询应答拒绝服务攻击漏洞

• CNNVD编号：CNNVD-200208-141
• 危害等级： 高危
  
  
• CVE编号：
  CVE-2002-0825
  
• 漏洞类型：
  
  
  边界条件错误
  
• 发布时间：
  
  2002-08-12
  
• 威胁类型：
  
  
  远程
  
• 更新时间：
  
  2006-09-21
  
• 厂        商：
  
  padl_software
• 漏洞来源：
  MandrakeSoft

nss_ldap模块用于与LDAP服务器通信，可以查询和处理主机用户，用户组等信息的程序。
nss_ldap模块错误验证被截断的DNS查询应答，远程攻击者可以利用这个漏洞进行拒绝服务攻击。
nss_ldap没有正确检查由DNS查询返回而且被截断的应答数据，当处理截断的查询应答时可导致nss_ldap读取合法内存以外的地址，这将使nss_ldap崩溃，产生拒绝服务。看起来不能利用来执行任意指令，不过没有得到证实。

厂商补丁：
MandrakeSoft
————
MandrakeSoft已经为此发布了一个安全公告(MDKSA-2002:075)以及相应补丁:

MDKSA-2002:075：nss_ldap update

链接：http://www.linux-mandrake.com/en/security/2002/2002-075.php” target=”_blank”>
http://www.linux-mandrake.com/en/security/2002/2002-075.php

补丁下载：

Updated Packages:

Linux-Mandrake 7.2:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrake Linux 8.0:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.0/RPMS/nss_ldap-202-1.2mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrake Linux 8.0/PPC:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.0/RPMS/nss_ldap-202-1.2mdk.ppc.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrake Linux 8.1:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/RPMS/nss_ldap-202-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/RPMS/pam_ldap-156-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrake Linux 8.1/IA64:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/RPMS/nss_ldap-202-1.1mdk.ia64.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/RPMS/pam_ldap-156-1.1mdk.ia64.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrake Linux 8.2:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/RPMS/nss_ldap-202-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/RPMS/pam_ldap-156-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrake Linux 8.2/PPC:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/RPMS/nss_ldap-202-1.1mdk.ppc.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/RPMS/pam_ldap-156-1.1mdk.ppc.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrake Linux 9.0:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/RPMS/nss_ldap-202-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/RPMS/pam_ldap-156-1.1mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Single Network Firewall 7.2:

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/snf7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm

ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/snf7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm

上述升级软件还可以在下列地址中的任意一个镜像ftp服务器上下载：

http://www.mandrakesecure.net/en/ftp.php” target=”_blank”>
http://www.mandrakesecure.net/en/ftp.php

来源: www.padl.com
链接:http://www.padl.com/Articles/PotentialBufferOverflowin.html